Re: Attempt to read beyond end of stream

[Tarawerkz via 4D_Tech]

Peter and Chip,

Thank you both for the constructive feedback on the possibilities.

As the cause of the issue and the consequent resolution (if indeed possible) is 
one black-box, I have decided to go back to the most recent stable version and 
re-do the necessary changes.


Regards,
Ronnie
Tarawerkz

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Re: Attempt to read beyond end of stream

[nug via 4D_Tech]

My first thought would be damage to the file from the hardware (bad block(s) on 
the disk, 
but I do not know your situation there
Another thought would be a crash/power outage/etc that occurred while 4D was 
writing the structure to disk, 
Or before the cache (4D’s structure, or disk) was flushed interrupting 
completion of the last dev changes

Chip

> On Dec 3, 2020, at 10:59 AM, Tarawerkz  wrote:
> 
> Thanks Chip,
> 
> I’ll try that, hopefully can find a version from not too far back.
> 
> Any idea what could have caused this?
> 
> Regards,
> Ronnie
> Tarawerkz
> 
> 
> 
> 
>> On 3 Dec 2020, at 9:27 PM, nug <4d_o...@pghrepository.org 
>> > wrote:
>> 
>> Ronie,
>> -Go back to the originally damaged structure and try MSC on it again.
>> -go back to a previous version of the structure (backup)
>> -contact 4D support
>> 
>> While I personally do not like it….
>> Also there is a new forum, where nearly ever one is now.
>> You will get more help/eyeballs on this issue there
>> 
>> https://discuss.4d.com 
>> 
>> Chip
>> 
>>> On Dec 3, 2020, at 5:42 AM, Tarawerkz via 4D_Tech <4d_tech@lists.4d.com 
>>> > wrote:
>>> 
>>> Hi All,
>>> 
>>> I would like seek advice on an issue I encountered with a v15 structure 
>>> file which has been in use for a long time.
>>> 
>>> Recently, when I logged in with the designer password to make some 
>>> amendments to the code, I encounter a memory allocation error on a resource 
>>> blob.
>>> So I did a structure repair and compact using MSC utility.
>>> 
>>> After the repair, the original error is resolved but a new error appeared 
>>> in its place,  
>>> This time it is an attempt to read beyond end of stream (error code 200).
>>> Subsequent repairs of the structure file does not remove the error.
>>> 
>>> The issue is data independent as it also appears with an empty data file.
>>> If I were to log in as a normal user (not the designer account), the error 
>>> is not encountered.
>>> 
>>> May I ask how I can recover the structure in this instance?
>>> 
>>> Regards,
>>> Ronnie
>>> Tarawerkz
>>> 
>>> 
>>> 
>>> 
>>> **
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>>> 
>>> **
>> 
> 

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Re: Attempt to read beyond end of stream

[Peter Bozek via 4D_Tech]

On Thu, Dec 3, 2020 at 4:59 PM Tarawerkz via 4D_Tech
<4d_tech@lists.4d.com> wrote:
>
> Thanks Chip,
>
> I’ll try that, hopefully can find a version from not too far back.
>
> Any idea what could have caused this?

My info is not very recent, but few years ago I analysed structure of
data and structure file. There are many auxiliary structures, but
actual data are stored in blocks, where each block have a prefix,
containing, between other, size of the block. If this field got
corrupted and contained some ridiculous big value, 4D would crash when
reading the data with the "Attempt to read beyond end of file ..."
error,

This error was hard to fix, because restore did not help (when it did
not read content of blocks) or crashed as well (when it did.) When
problem was in data file, error happened when 4D accessed particular
record, then it was possible to find that record in file and fix it
with hex file editor. With structure this would be much harder.

So, if this is the case, I am afraid you probably do not have other
solution then go to stable backup and then try to copy changes, if you
can open structure without crash. What I would suggest is to try to
exclude all other sources of problem, maybe moving the structure to
new empty folder, no plugins, components, settings or logs.

Regards,

Peter Bozek


>
> Regards,
> Ronnie
> Tarawerkz
>
>
>
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Re: Attempt to read beyond end of stream

[Tarawerkz via 4D_Tech]

Thanks Chip,

I’ll try that, hopefully can find a version from not too far back.

Any idea what could have caused this?

Regards,
Ronnie
Tarawerkz




> On 3 Dec 2020, at 9:27 PM, nug <4d_o...@pghrepository.org> wrote:
> 
> Ronie,
> -Go back to the originally damaged structure and try MSC on it again.
> -go back to a previous version of the structure (backup)
> -contact 4D support
> 
> While I personally do not like it….
> Also there is a new forum, where nearly ever one is now.
> You will get more help/eyeballs on this issue there
> 
> https://discuss.4d.com 
> 
> Chip
> 
>> On Dec 3, 2020, at 5:42 AM, Tarawerkz via 4D_Tech <4d_tech@lists.4d.com 
>> > wrote:
>> 
>> Hi All,
>> 
>> I would like seek advice on an issue I encountered with a v15 structure file 
>> which has been in use for a long time.
>> 
>> Recently, when I logged in with the designer password to make some 
>> amendments to the code, I encounter a memory allocation error on a resource 
>> blob.
>> So I did a structure repair and compact using MSC utility.
>> 
>> After the repair, the original error is resolved but a new error appeared in 
>> its place,  
>> This time it is an attempt to read beyond end of stream (error code 200).
>> Subsequent repairs of the structure file does not remove the error.
>> 
>> The issue is data independent as it also appears with an empty data file.
>> If I were to log in as a normal user (not the designer account), the error 
>> is not encountered.
>> 
>> May I ask how I can recover the structure in this instance?
>> 
>> Regards,
>> Ronnie
>> Tarawerkz
>> 
>> 
>> 
>> 
>> **
>> 4D Internet Users Group (4D iNUG)
>> New Forum: https://discuss.4D.com 
>> Archive:  http://lists.4d.com/archives.html 
>> 
>> Options: https://lists.4d.com/mailman/options/4d_tech 
>> 
>> Unsub:  mailto:4d_tech-unsubscr...@lists.4d.com 
>> 
>> **
> 

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Re: Attempt to read beyond end of stream

[Chuck Miller via 4D_Tech]

Like Chip stetted, almost all are on discuss forum now. I don’t think support 
will help on a v15 db as they no longer support it.

Regards
Chuck

 Chuck Miller Voice: (617) 739-0306
 Informed Solutions, Inc. Fax: (617) 232-1064   
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> On Dec 3, 2020, at 5:42 AM, Tarawerkz via 4D_Tech <4d_tech@lists.4d.com> 
> wrote:
> 
> Hi All,
> 
> I would like seek advice on an issue I encountered with a v15 structure file 
> which has been in use for a long time.
> 
> Recently, when I logged in with the designer password to make some amendments 
> to the code, I encounter a memory allocation error on a resource blob.
> So I did a structure repair and compact using MSC utility.
> 
> After the repair, the original error is resolved but a new error appeared in 
> its place,  
> This time it is an attempt to read beyond end of stream (error code 200).
> Subsequent repairs of the structure file does not remove the error.
> 
> The issue is data independent as it also appears with an empty data file.
> If I were to log in as a normal user (not the designer account), the error is 
> not encountered.
> 
> May I ask how I can recover the structure in this instance?
> 
> Regards,
> Ronnie
> Tarawerkz
> 
> 
> 
> 
> **
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Re: Attempt to read beyond end of stream

[nug via 4D_Tech]

Ronie,
-Go back to the originally damaged structure and try MSC on it again.
-go back to a previous version of the structure (backup)
-contact 4D support

While I personally do not like it….
Also there is a new forum, where nearly ever one is now.
You will get more help/eyeballs on this issue there

https://discuss.4d.com 

Chip

> On Dec 3, 2020, at 5:42 AM, Tarawerkz via 4D_Tech <4d_tech@lists.4d.com> 
> wrote:
> 
> Hi All,
> 
> I would like seek advice on an issue I encountered with a v15 structure file 
> which has been in use for a long time.
> 
> Recently, when I logged in with the designer password to make some amendments 
> to the code, I encounter a memory allocation error on a resource blob.
> So I did a structure repair and compact using MSC utility.
> 
> After the repair, the original error is resolved but a new error appeared in 
> its place,  
> This time it is an attempt to read beyond end of stream (error code 200).
> Subsequent repairs of the structure file does not remove the error.
> 
> The issue is data independent as it also appears with an empty data file.
> If I were to log in as a normal user (not the designer account), the error is 
> not encountered.
> 
> May I ask how I can recover the structure in this instance?
> 
> Regards,
> Ronnie
> Tarawerkz
> 
> 
> 
> 
> **
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> Options: https://lists.4d.com/mailman/options/4d_tech
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